Journal article
Analysis of Degenerate Four-Wave-Mixing Noise in Return-to-Zero Optical Transmission Systems Including Walk-Off
Abstract
A noise theory for four-wave-mixing (FWM) tone generated by nonlinear interaction of channels of a wavelength-division-multiplexed system is described. Analytical expressions for power spectral density and variance of FWM noise are derived without ignoring group-velocity walk-off between channels. The results show that the variance of FWM noise exhibits sharp minima and maxima as a function of channel separation which is due to the coherent …
Authors
Kumar S
Journal
Journal of Lightwave Technology, Vol. 23, No. 1, pp. 310–320
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Publication Date
January 1, 2005
DOI
10.1109/jlt.2004.835742
ISSN
0733-8724